Well, first off,wish there was HL's in michigan,but not so.Looking at a 70 gallon Aquarium at this point.Plus every ant hill I pass now while out mowing or whatever, I say " oh, there's another one".Yea , I know there not harvesters, but thought might be able to mix some in.Have got a few leads on HL's, was hoping for something like I used to have years ago, which I guesstimate was a coronatum.(Not sure if there still legally an option) the platys are ok, solare would be nicer.Like the round horn configuration.Looking into lights and such, can't do this unless I am prepared.thanks to this site, I feel much better about it.I know this is a bad question. I was talking to a chemical engineer at work, asked him about formic, he said its not a real strong acid,and it is used in the agric industry, some on hay and such.Was wondering, has anyone thought of putting a little on lets say ants that are not of the harvester variety.Please don't shoot me up to much on this question.I am concerned that things are right.Also , are the harvester ant ebay item someone from here?,thanks scott